620842005 has 192 divisors, whose sum is σ = 1385280000. Its totient is φ = 256048128.

The previous prime is 620841997. The next prime is 620842007. The reversal of 620842005 is 500248026.

It is not a de Polignac number, because 620842005 - 2³ = 620841997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 620842005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620842007) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 8504649 + ... + 8504721.

It is an arithmetic number, because the mean of its divisors is an integer number (7215000).

Almost surely, 2^620842005 is an apocalyptic number.

It is an amenable number.

620842005 is an abundant number, since it is smaller than the sum of its proper divisors (764437995).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

620842005 is a wasteful number, since it uses less digits than its factorization.

620842005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 620842005 is about 24916.7013266203. The cubic root of 620842005 is about 853.0877340724.

The spelling of 620842005 in words is "six hundred twenty million, eight hundred forty-two thousand, five".